Hunting plays a role in the extinction, by means of hunting for food or sport.
This includes poaching animals, which is extremely illegal. We also contribute to the problem by destroying natural habitats through deforestation and construction work.
Some of the animals we've killed out of existence are the river dolphin, some species of wallaby, many species of rats and mice, some bat species, certain species of tigers and wolves!
All in all. we've contributed to the extinction of almost 100 mammals!